'use strict';

module.exports = function(usage, description, init, aliases) {
  if (Array.isArray(init)) {
    aliases = init;
    init = undefined;
  }
  if (aliases && Array.isArray(aliases)) {
    usage = [].concat([usage], aliases);
  }

  // Register command to global scope
  this.details.commands.push({
    usage,
    description,
    init: typeof init === 'function' ? init : false
  });

  // Allow chaining of .command()
  return this;
};